Unrolled build for rust-lang#138406

Rollup merge of rust-lang#138406 - ehuss:update-mdbook, r=jieyouxu

Update mdbook to 0.4.47

This updates mdbook to bring in an important fix that enables the `output.html.hash-files` option to deal with network caching.

Changelog:
https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-0446
https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-0447

Author: rust-timer

src/tools/rustbook/Cargo.lock

@@ -552,6 +552,12 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
 [[package]]
 name = "html5ever"
 version = "0.27.0"
@@ -874,9 +880,9 @@ dependencies = [
 
 [[package]]
 name = "mdbook"
-version = "0.4.45"
+version = "0.4.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b07d36d96ffe1b5b16ddf2bc80b3b26bb7a498b2a6591061250bf0af8e8095ad"
+checksum = "7e1a8fe3a4a01f28dab245c474cb7b95ccb4d3d2f17a5419a3d949f474c45e84"
 dependencies = [
  "ammonia",
  "anyhow",
@@ -886,6 +892,7 @@ dependencies = [
  "elasticlunr-rs",
  "env_logger",
  "handlebars",
+ "hex",
  "log",
  "memchr",
  "once_cell",
@@ -894,6 +901,7 @@ dependencies = [
  "regex",
  "serde",
  "serde_json",
+ "sha2",
  "shlex",
  "tempfile",
  "toml 0.5.11",

src/tools/rustbook/Cargo.toml

@@ -15,6 +15,6 @@ mdbook-i18n-helpers = "0.3.3"
 mdbook-spec = { path = "../../doc/reference/mdbook-spec" }
 
 [dependencies.mdbook]
-version = "0.4.45"
+version = "0.4.47"
 default-features = false
 features = ["search"]

src/tools/rustbook/src/main.rs

@@ -151,6 +151,7 @@ fn get_book_dir(args: &ArgMatches) -> PathBuf {
 fn load_book(book_dir: &Path) -> Result3<MDBook> {
     let mut book = MDBook::load(book_dir)?;
     book.config.set("output.html.input-404", "").unwrap();
+    book.config.set("output.html.hash-files", true).unwrap();
     Ok(book)
 }